Boron Compounds: Inorganic or organic compounds that contain boron as an integral part of the molecule.Boric Acids: Inorganic and organic derivatives of boric acid either B(OH)3 or, preferably H3BO3.Boron Neutron Capture Therapy: A technique for the treatment of neoplasms, especially gliomas and melanomas in which boron-10, an isotope, is introduced into the target cells followed by irradiation with thermal neutrons.Boron: A trace element with the atomic symbol B, atomic number 5, and atomic weight [10.806; 10.821]. Boron-10, an isotope of boron, is used as a neutron absorber in BORON NEUTRON CAPTURE THERAPY.Boranes: The collective name for the boron hydrides, which are analogous to the alkanes and silanes. Numerous boranes are known. Some have high calorific values and are used in high-energy fuels. (From Grant & Hackh's Chemical Dictionary, 5th ed)Borates: Inorganic or organic salts and esters of boric acid.Borohydrides: A class of inorganic or organic compounds that contain the borohydride (BH4-) anion.Neutron Capture Therapy: A technique for the treatment of neoplasms in which an isotope is introduced into target cells followed by irradiation with thermal neutrons.Isotopes: Atomic species differing in mass number but having the same atomic number. (Grant & Hackh's Chemical Dictionary, 5th ed)Neutrons: Electrically neutral elementary particles found in all atomic nuclei except light hydrogen; the mass is equal to that of the proton and electron combined and they are unstable when isolated from the nucleus, undergoing beta decay. Slow, thermal, epithermal, and fast neutrons refer to the energy levels with which the neutrons are ejected from heavier nuclei during their decay.Sulfhydryl Compounds: Compounds containing the -SH radical.Molecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.